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Zhang Y, Lei Z, Lin B, Lin Z, Dong Y, Ren P, Li X, Bian Y, Zhao C. Split-level folding, step-type tension-relieving suture technique, and the evaluation on scar minimization. J Cosmet Dermatol 2024. [PMID: 38400620 DOI: 10.1111/jocd.16236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 01/21/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND Prevailing tension-reducing suture methods have a spectrum of issues. This study presents a straightforward yet highly efficacious suture technique known as the Split-level Folding, Step-type Tension-relieving Suture technique, which could play a pivotal role in preempting incisional scarring. AIMS To introduce Split-level Folding, Step-type Tension-relieving Suture technique and assess its effect on scar minimization. METHODS A retrospective analysis of 64 patients who underwent treatment utilizing the proposed suturing methodology. Assessment parameters included the Patient and Observer Scar Assessment Scale (POSAS), the Vancouver Scar Scale (VSS), scar width, complications, and all evaluated at 6- and 12-month postoperatively. RESULTS At 12-month follow-up, the POSAS and VSS scores in the normal suture group (32.58 ± 5.43, 3.58 ± 1.39) were considerably higher than the step-type suture group (29.75 ± 3.56, p = 0.0007; 2.78 ± 1.17, p = 0.0006). Moreover, the step-type suture group showcased a significantly narrower average incision scar width (1.62 ± 0.36) than the normal suture group (1.87 ± 0.42, p = 0.0004). This novel tension-relieving suture technique that effectively circumvents the occurrence of persistent localized eversion and other complications often associated with traditional tension-relieving sutures. CONCLUSIONS The Split-level Folding, Step-type Tension-relieving Suture technique emerges as a highly promising option for averting incisional scarring. This suture method works well for incisions on the chest, back, and extremities, resulting in significantly better long-term outcomes.
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Affiliation(s)
- Yuheng Zhang
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
- Department of Orthopedics, Western Theater Air Force Hospital of PLA, Chengdu, China
| | - Zhanjun Lei
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Bin Lin
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhixiao Lin
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
- Department of Burn and Plastic Surgery, No. 923 Hospital of Joint Logistic Support Force of PLA, Nanning, China
| | - Yuchen Dong
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Pan Ren
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Xueyong Li
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yongqian Bian
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Congying Zhao
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
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Huang R, Lin B, Lei Z, Xu L, Zhang H, Wang W, Zhang Y, Xiao S, Long Y, Li J, Li X. On-Site Construction of a Full-Thickness Skin Equivalent with Endothelial Tube Networks via Multilayer Electrospinning for Wound Coverage. ACS Biomater Sci Eng 2023; 9:6241-6255. [PMID: 37823558 DOI: 10.1021/acsbiomaterials.3c00913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Novel full-thickness skin substitutes are of increasing interest due to the inherent limitations of current models lacking capillary networks. Herein, we developed a novel full-thickness skin tissue containing blood capillary networks through a layer-by-layer assembly approach using a handy electrospinning apparatus and evaluated its skin wound coverage potential in vivo. The average diameter and thickness of fabricated poly-ε-caprolactone-cellulose acetate scaffolds were easily tuned in the range of 474 ± 77-758 ± 113 nm and 9.43 ± 2.23-29.96 ± 5.78 μm by varying electrospinning distance and duration, as indicated by FE-SEM. Besides, keratinocytes exhibited homogeneous differentiation throughout the fibrous matrix prepared with electrospinning distance and duration of 9 cm and 1.5 min within five-layer (5L) epidermal tissues with thickness of 135-150 μm. Moreover, coculture of vascular endothelial cells, circulating fibrocytes, and fibroblasts within the 5L dermis displayed network formation in vitro, resulting in reduced inflammatory factor levels and enhanced integration with the host vasculature in vivo. Additionally, the skin equivalent grafts consisting of the epidermal layer, biomimetic basement membrane, and vascularized dermis layer with an elastic modulus of approximately 11.82 MPa exhibited accelerated wound closure effect indicative of re-epithelialization and neovascularization with long-term cell survival into the host, which was confirmed by wound-healing rate, bioluminescence imaging activity, and histological analysis. It is the first report of a full-thickness skin equivalent constructed using a battery-operated electrospinning apparatus, highlighting its tremendous potential in regenerative medicine.
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Affiliation(s)
- Rong Huang
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Bin Lin
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Zhanjun Lei
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Lirong Xu
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Hao Zhang
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Wenxuan Wang
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Yuheng Zhang
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Shuao Xiao
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Yunze Long
- College of Physics, Qingdao University, Qingdao 266071, China
| | - Jing Li
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
| | - Xueyong Li
- Department of Burn and Plastic Surgery, Second Affiliated Hospital, Air Force Medical University, Xi'an 710038, China
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Fang M, Lei Z, Ruilin M, Jing W, Leqiang D. High temperature stress induced oxidative stress, gut inflammation and disordered metabolome and microbiome in tsinling lenok trout. Ecotoxicol Environ Saf 2023; 266:115607. [PMID: 37862746 DOI: 10.1016/j.ecoenv.2023.115607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 10/09/2023] [Accepted: 10/14/2023] [Indexed: 10/22/2023]
Abstract
Tsinling lenok trout (Brachymystax lenok tsinlingensis Li) is a species of cold-water salmon that faces serious challenges due to global warming. High temperature stress has been found to damage the gut integrity of cold-water fish, impacting their growth and immunity. However, limited research exists on the causal relationship between gut microbial disturbance and metabolic dysfunction in cold-water fish induced by high temperature stress. To address this gap, we conducted a study to investigate the effects of high temperature stress (24 °C) on the gut tissue structure, antioxidant capacity, gut microorganisms, and metabolome reactions of tsinling lenok trout. Our analysis using 16 S rDNA gene sequencing revealed significant changes in the gut microbial composition and metabolic profile. Specifically, the abundance of Firmicutes and Gemmatimonadetes decreased significantly with increasing temperature, while the abundance of Bacteroidetes increased significantly. Metabolic analysis revealed a significant decrease in the abundance of glutathione, which is synthesized from glutamate and glycine, under high temperature stress. Additionally, there was a notable reduction in the levels of adenosine, inosine, xanthine, guanosine, and deoxyguanosine, which are essential for DNA/RNA synthesis. Conversely, there was a significant increase in the abundance of D-glucose 6 P. Furthermore, high temperature stress adversely affects intestinal structure and barrier function. Our findings provide valuable insights into the mechanism of high temperature stress in cold-water fish and serve as a foundation for future research aimed at mitigating the decline in production performance caused by such stress.
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Affiliation(s)
- M Fang
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, South Xihe Road, Qinzhou, Tianshui 741000, Gansu, PR China.
| | - Z Lei
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, South Xihe Road, Qinzhou, Tianshui 741000, Gansu, PR China
| | - M Ruilin
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, South Xihe Road, Qinzhou, Tianshui 741000, Gansu, PR China
| | - W Jing
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, South Xihe Road, Qinzhou, Tianshui 741000, Gansu, PR China
| | - D Leqiang
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, South Xihe Road, Qinzhou, Tianshui 741000, Gansu, PR China
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Yang H, Wu Y, Sui J, Wang N, Lei Z, He J. Single Cell Analysis of Macrophage Heterogeneity and NK-Cell Exhaustion in Lewis Lung Cancer Xenograft Tumor. Int J Radiat Oncol Biol Phys 2023; 117:e271. [PMID: 37785026 DOI: 10.1016/j.ijrobp.2023.06.1238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Stereotactic body radiation therapy (SBRT) has attracted much attention because of its ability to stimulate anti-tumor immune response. However, the mechanism of SBRT reprogramming the tumor microenvironment remains to be elucidated. MATERIALS/METHODS Using Lewis lung carcinoma (LLC) xenograft mice model treated with SBRT (8Gy x 3F), multiplex assay was performed to measure serum chemokine levels, and single-cell RNA sequencing was performed to assess tumor microenvironment. The differential expression genes of each cell subcluster were identified by the "Find-All markers" function with default parameters provided by Seurat. Intercellular communication analysis was explored by using CellPhone DB package. RESULTS The majority of serum chemokines involved macrophage recruitment, including CCL3, CCL4, CCL8, and CCL20, were highly secreted at 7 days after SBRT. Single-cell RNA sequencing of 108,741 cells were contained from 6 mouse Lewis lung carcinoma samples (n = 3 tumors for SBRT, n = 3 tumors pooled for SHAM). Besides Lewis cancer cells, myeloid cells were 57.61% ,70.82% in Sham-irradiation (SHAM) and SBRT while NT and T cells were 20.50%, 7.81% in SHAM and SBRT, respectively. When compared with SHAM group, upregulation of Ccl3, Ccl4, Ccl8 chemokine genes were observed in cancer cells of SBRT group. Differential expression genes analysis showed high expression level of Ccl8 (Log2FC 2.54, p<0.01) in cluster of Mrc1+macrophage. The SBRT group consisted of more Ccl8+Mrc1+macrophages (proportion 36.28% for SBRT, 27.44% for SHAM) and exhausted NK cells (proportion 22.56% for SBRT, 13.70% for SHAM). More importantly, intercellular communication analysis revealed a potential communication network between Ccl8+Mrc1+macrophages and exhausted NK cells. CONCLUSION Our results provide a potential therapeutic strategy by disrupting Ccl8+ Mrc1+macrophages and NK-cell interaction to facilitate the stimulation of the anti-tumor immune response by SBRT.
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Affiliation(s)
- H Yang
- College of Bioengineering, Chongqing University, Chongqing, China, Chongqing, China
| | - Y Wu
- Oncology Radiotherapy Center of Chongqing University Cancer Hospital, Chongqing, China
| | - J Sui
- College of Medicine, Chongqing University, Chongqing, China
| | - N Wang
- Chongqing university, Chongqing, China
| | - Z Lei
- College of Medicine, Chongqing University, Chongqing, China, Chongqing, China
| | - J He
- College of Bioengineering, Chongqing University, Chongqing, China, Chongqing, China
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Xue FM, Liu C, Lei Z, An C. [A case of haploinsufficiency of A20 caused by new variation of TNFAIP3 gene]. Zhonghua Er Ke Za Zhi 2023; 61:740-742. [PMID: 37528019 DOI: 10.3760/cma.j.cn112140-20230202-00072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Affiliation(s)
- F M Xue
- Department of Gastroenterology, Children's Hospital Affiliated to Zhengzhou University,Zhenzhou 450018, China
| | - C Liu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Z Lei
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University,Zhenzhou 450018, China
| | - C An
- Department of Clinical Laboratory, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
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Yao YL, He SK, Lei Z, Ye T, Xie Y, Deng ZG, Cui B, Qi W, Yang L, Zhu SP, He XT, Zhou WM, Qiao B. High-Flux Neutron Generator Based on Laser-Driven Collisionless Shock Acceleration. Phys Rev Lett 2023; 131:025101. [PMID: 37505952 DOI: 10.1103/physrevlett.131.025101] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 10/20/2022] [Accepted: 05/24/2023] [Indexed: 07/30/2023]
Abstract
A novel compact high-flux neutron generator with a pitcher-catcher configuration based on laser-driven collisionless shock acceleration (CSA) is proposed and experimentally verified. Different from those that previously relied on target normal sheath acceleration (TNSA), CSA in nature favors not only acceleration of deuterons (instead of hydrogen contaminants) but also increasing of the number of deuterons in the high-energy range, therefore having great advantages for production of high-flux neutron source. The proof-of-principle experiment has observed a typical CSA plateau feature from 2 to 6 MeV in deuteron energy spectrum and measured a forward neutron flux with yield 6.6×10^{7} n/sr from the LiF catcher target, an order of magnitude higher than the compared TNSA case, where the laser intensity is 10^{19} W/cm^{2}. Self-consistent simulations have reproduced the experimental results and predicted that a high-flux forward neutron source with yield up to 5×10^{10} n/sr can be obtained when laser intensity increases to 10^{21} W/cm^{2} under the same laser energy.
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Affiliation(s)
- Y L Yao
- Center for Applied Physics and Technology, HEDPS and State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - S K He
- Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics (CAEP), Mianyang 621900, China
| | - Z Lei
- Center for Applied Physics and Technology, HEDPS and State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - T Ye
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - Y Xie
- Center for Applied Physics and Technology, HEDPS and State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Z G Deng
- Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics (CAEP), Mianyang 621900, China
| | - B Cui
- Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics (CAEP), Mianyang 621900, China
| | - W Qi
- Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics (CAEP), Mianyang 621900, China
| | - L Yang
- Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics (CAEP), Mianyang 621900, China
| | - S P Zhu
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - X T He
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - W M Zhou
- Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics (CAEP), Mianyang 621900, China
| | - B Qiao
- Center for Applied Physics and Technology, HEDPS and State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-optoelectronic, Peking University, Beijing 100094, China
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7
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Chirico N, Kessler EL, Maas RGC, Fang J, Qin J, Dokter I, Ciccone S, Saric T, Buikema JW, Lei Z, Doevendans P, Sluijter JPG, Van Mil A. Small molecule-mediated rapid maturation of human induced pluripotent stem cell derived cardiomyocytes. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Other. Main funding source(s): Gravitation Program “Materials Driven Regeneration” by the Netherlands Organization for Scientific Research (RegmedXB #024.003.013) and the Marie Skłodowska-Curie Actions (Grant agreement RESCUE #801540). The EU-funded project BRAV3 (H2020, ID:874827)
Background
Human-induced pluripotent stem cell (iPSC)-derived cardiomyocytes (iPSC-CMs) do not display all hallmarks of mature human primary cardiomyocytes: the ability to use fatty acids as an energy source, high mitochondrial mass, increased nuclei polyploidism, synchronized electrical conduction, and forceful contractions. Instead, their phenotype is similar to immature cardiomyocytes in the late fetal stage. This immaturity represents a bottleneck to their application in 1) disease modeling – as most cardiac (genetic) diseases have a middle-age onset – and 2) clinical use, where integration and functional coupling are key. So far, the mainly used methods to enhance iPSC-CM maturation include prolonged time-in-culture, 3D culture, cyclic mechanical stretch, and electrical stimulation with specialized media. However, these protocols are laborious, costly, and not easily scalable.
Methods
In this study, we developed a simple, low cost, and rapid protocol using two peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PPARGC1A/PGC-1α) activating small molecules: Asiatic Acid (AA) and GW501516 (GW) to promote cardiomyocyte maturity by inducing a metabolic switch to fatty acid utilization and increased mitochondrial biogenesis.
Results
Monolayers of iPSC-CMs were incubated with AA and GW every other day for 10 days resulting in increased expression of fatty acid-metabolism-related genes (5 and 10-fold increase in CPT1B gene expression, respectively), mitochondria biogenesis (protein expression of ATP5A) and fusion (50 and 100-fold increase in OPA1 gene expression, respectively). In addition, AA treated iPSC-CMs responded in the seahorse mitochondria stress test more rapidly to an artificial increase in mitochondrial activity and showed a higher flexibility in substrate utilization in the seahorse stress test. A more mature electrophysiological functionality was shown by increased ion channel gene expression (KCNA4, SCN5A, GJA1, CACNA1C, and SCN1B) and enhanced synchronous contraction in treated samples. Moreover, maturation was further shown by increased sarcomeric gene expression (5 and 7-fold increase in TNNI3 in AA and GW respectively) and nuclear polyploidism (>4N fold 2.16 and 1.48-fold increase in AA and GW respectively).
Conclusions
Collectively, these findings show that AA and GW trigger a metabolic switch and induce extensive maturation of iPSC-CMs, providing a rapid and cost-effective method to obtain iPSC-CMs that more closely resemble their adult counterparts.
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Affiliation(s)
- N Chirico
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - E L Kessler
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - RGC Maas
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - J Fang
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - J Qin
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - I Dokter
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - S Ciccone
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - T Saric
- University of Cologne, Center for Physiology and Pathophysiology, Institute for Neurophysiology , Cologne , Germany
| | - JW Buikema
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - Z Lei
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - P Doevendans
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - JPG Sluijter
- University Medical Center Utrecht , Utrecht , Netherlands (The)
| | - A Van Mil
- University Medical Center Utrecht , Utrecht , Netherlands (The)
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Fang J, Van Der Geest JSA, Yao B, Yang Q, Chirico N, Brans MA, Roefs MT, Vader P, De Jager SCA, De Bruin A, Vink A, Van Mil A, Schiffelers RM, Lei Z, Sluijter JPG. E2F7/8 is involved in cardiomyocyte polyploidy but does not affect myocardial reperfusion injury recovery. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Other. Main funding source(s): CSC fellowship
Background
Polyploidy cells consist of more than two complete sets of homologous chromosomes. Although a characteristic feature of cardiomyocytes and observed in all mammalian species, its molecular mechanism and biological functions are still unknown. Cardiomyocytes polyploidy in rodents occurs mainly through incomplete cytokinesis and increases with age. Studies have demonstrated that E2F7/8 transcription factors are key regulators of polyploidy in the liver and pancreas, however, it remains unclear if E2F7/8 control the generation of polyploidy cardiomyocytes and what the functional consequence is post-myocardial infarction (MI).
Methods
By using a tamoxifen inducible Cre/LoxP approach in new-born mice, we deleted E2F7/8 transcription factors ubiquitously and evaluated the biological significance of postnatal E2F7/8 loss. Mice underwent myocardial ischemia reperfusion injury (IRI) and heart function was assessed by 4D-echocardiography. Cardiomyocyte nucleus polyploidy was measured by FACS and microscope.
Results
Deficiency of E2F7/8 significantly suppress cardiomyocyte mononucleated and multinucleated polyploidy, as well as dramatically decreased hepatocytes polyploidy. E2F7/8 defect also led to a decrease in cardiac stress related marker lever such as ANP, BNP, MMP2, β-MHC/α-MHC and an increase in CD31 expression level. Surprisingly, E2F7/8 deletion did not have impact on cardiac function and dimensions post-IRI.
Conclusion
In summary, we identified that E2F7/8 activity is involved in the cellular polyploidy in the heart but did not affect myocardial function after myocardial injury.
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Affiliation(s)
- J Fang
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - JSA Van Der Geest
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - B Yao
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - Q Yang
- University Medical Center Utrecht, CDL Research , Utrecht , Netherlands (The)
| | - N Chirico
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - MA Brans
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - MT Roefs
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - P Vader
- University Medical Center Utrecht, Experimental Cardiology and CDL Research , Utrecht , Netherlands (The)
| | - SCA De Jager
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - A De Bruin
- University of Groningen, Department of Pediatrics , Groningen , Netherlands (The)
| | - A Vink
- University Medical Center Utrecht, Department of Pathology , Utrecht , Netherlands (The)
| | - A Van Mil
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - RM Schiffelers
- University Medical Center Utrecht, CDL Research , Utrecht , Netherlands (The)
| | - Z Lei
- University Medical Center Utrecht, Experimental Cardiology and CDL Research , Utrecht , Netherlands (The)
| | - JPG Sluijter
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
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Van Der Geest JSA, Lei Z, Doevendans PAFM, Sluijter JPG. Myocardial tissue slices for modeling of the human PLN p.Arg14del associated cardiomyopathy. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): NWO - The Dutch Research Council
Background
Current in vivo preclinical models lack the predictability of the clinical efficacy resulting in a high dropout rate of therapeutic candidates. Advanced human-based models are required to bridge this gap and indicate the potential of novel therapeutic approaches[1]. Myocardial tissue slices are an in vitro model that recapitulates the native multicellular architecture of the heart. This allows for modeling cellular processes in a macroscopic context entailing great promise. The most common cardiomyopathy-related mutation in the Netherlands is the loss of arginine at position 14 (p.Arg14del) in the phospholamban protein (PLN). PLN is a critical regulator of calcium cycling and contractility in the heart. The p.Arg14del mutation results in a super inhibition of SERCA2a and thus aberrant calcium handling and reduced contractile force. Mice models harbouring the PLN p.Arg14del do not completely recapitulate the human manifestation mainly due to the difference between species; heart rate, Calcium-cycling and ion properties, and different myosin heavy chain isoforms, showing the unmet need for a human-based model[2,3].
Methods & Results
300 µm thick viable myocardial tissue were sectioned from a PLN p.Arg14del patient’s left ventricle. Although the myocardial tissue slices were kept alive for eight days in static culture, these conditions initiated cell death and dedifferentiation. The tissue slices show the greatest resemblance to the intact architecture of the in vivo human heart, it is the most relevant model for viral transduction in the human heart, and proof-of-principle of this is performed. Myocardial tissue slices of a PLN p.Arg14del patient retain the structural phenotype shown by the fibrofatty deposition. Similarly, functional patient characteristics, aberrant calcium handling, and reduced contractile force are preserved.
Conclusion
Myocardial tissue slices recapitulate the (patho)physiology of the heart, as shown here with the PLN p.Arg14del case. However, the static culture conditions induce remodeling of the heart and thus only allow for acute measures in the native heart. To prolong the period that the slices recapitulate the native heart, culture conditions should mimic the environment of the heart. The tissue slices allow for a currently unmet need to modulate the complex architecture of the human heart with e.g. novel delivery tools or therapeutic interventions. All in all, myocardial tissue slices are a promising model that can give novel insights into the physiology of the human heart, and therapeutic intervention on induced or genetic cardiomyopathies.
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Affiliation(s)
- JSA Van Der Geest
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - Z Lei
- University Medical Center Utrecht, CDL Research , Utrecht , Netherlands (The)
| | - PAFM Doevendans
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - JPG Sluijter
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
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10
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Xia K, Wang F, Lai X, Luo P, Chen H, Ma Y, Huang W, Ou W, Li Y, Feng X, Lei Z, Tu X, Ke Q, Mao F, Deng C, Xiang A. Gene Editing/Gene Therapies: AAV-MEDIATED GENE THERAPY PRODUCES FERTILE OFFSPRING IN THE LHCGR-DEFICIENT MOUSE MODEL OF LEYDIG CELL FAILURE. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00156-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Yan W, Feng Y, Lei Z, Kuang W, Long C. MicroRNA-214-3p Ameliorates LPS-Induced Cardiomyocyte Injury by Inhibiting Cathepsin B. Folia Biol (Praha) 2022; 68:78-85. [PMID: 36384265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Myocardial injury is a common complication of sepsis. MicroRNA (miRNA) miR-214-3p is protective against myocardial injury caused by sepsis, but its mechanism in lipopolysaccharide (LPS)- induced cardiomyocyte injury is still unclear. An AC16 cell injury model was induced by LPS treatment. Cell Counting Kit-8 and flow cytometry assay showed decreased cell viability and increased apoptosis in LPS-treated AC16 cells. The levels of caspase- 3, Bax, atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), myosin 6 (Myh6), myosin 7 (Myh7), reactive oxygen species (ROS), and malondialdehyde (MDA) were increased in LPS-treated AC16 cells, but the levels of Bcl-2 and superoxide dismutase (SOD) were decreased. MiR-214-3p was down-regulated and cathepsin B (CTSB) was upregulated in LPS-treated AC16 cells. At the same time, miR-214-3p could target CTSB and reduce its expression. We also found that a miR-214-3p mimic or CTSB silencing could significantly reduce LPSinduced apoptosis, decrease ROS, MDA, caspase-3, and Bax and increase SOD and Bcl-2. CTSB silencing could significantly reduce ANP, BNP, Myh6, and Myh7 in LPS-treated AC16 cells. The effects of CTSB silencing were reversed by a miR-214-3p inhibitor. In summary, miR-214-3p could inhibit LPSinduced myocardial injury by targeting CTSB, which provides a new idea for myocardial damage caused by sepsis.
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Affiliation(s)
- W Yan
- The First Affiliated Hospital, Department of Cardiovascular Surgery, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Y Feng
- The First Affiliated Hospital, Department of Cardiovascular Surgery, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Z Lei
- The First Affiliated Hospital, Department of Cardiovascular Surgery, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - W Kuang
- The First Affiliated Hospital, Department of Cardiovascular Surgery, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - C Long
- The First Affiliated Hospital, Department of Cardiovascular Surgery, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
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12
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Zhao ZH, Xie Y, Lei Z, Jiao JL, Zhou WM, Zhou CT, Zhu SP, He XT, Qiao B. Onset of inverse magnetic energy transfer in collisionless turbulent plasmas. Phys Rev E 2021; 104:025204. [PMID: 34525564 DOI: 10.1103/physreve.104.025204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 07/28/2021] [Indexed: 11/07/2022]
Abstract
Inverse magnetic energy transfer from small to large scales is a key physical process for the origin of large-scale strong magnetic fields in the universe. However, so far, from the magnetohydrodynamic perspective, the onset of inverse transfer is still not fully understood, especially the underlying dynamics. Here, we use both two-dimensional and three-dimensional particle-in-cell simulations to show the self-consistent dynamics of inverse transfer in collisionless decaying turbulent plasmas. Using the space filtering technique in theory and numerical analyses, we identify magnetic reconnection as the onset and fundamental drive for inverse transfer, where, specifically, the subscale electromotive force driven by magnetic reconnection do work on the large-scale magnetic field, resulting in energy transfer from small to large scales. The mechanism is also verified by the strong correlations in locations and characteristic scales between inverse transfer and magnetic reconnection.
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Affiliation(s)
- Z H Zhao
- Center for Applied Physics and Technology, HEDPS, and SKLNPT, School of Physics, Peking University, Beijing 100871, China
| | - Y Xie
- Center for Applied Physics and Technology, HEDPS, and SKLNPT, School of Physics, Peking University, Beijing 100871, China
| | - Z Lei
- Center for Applied Physics and Technology, HEDPS, and SKLNPT, School of Physics, Peking University, Beijing 100871, China
| | - J L Jiao
- Center for Applied Physics and Technology, HEDPS, and SKLNPT, School of Physics, Peking University, Beijing 100871, China
| | - W M Zhou
- Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
| | - C T Zhou
- Center for Advanced Material Diagnostic Technology, Shenzhen Technology University, Shenzhen 518118, China
| | - S P Zhu
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - X T He
- Center for Applied Physics and Technology, HEDPS, and SKLNPT, School of Physics, Peking University, Beijing 100871, China.,Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - B Qiao
- Center for Applied Physics and Technology, HEDPS, and SKLNPT, School of Physics, Peking University, Beijing 100871, China
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13
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Lin Z, Zhao C, Lei Z, Zhang Y, Huang R, Lin B, Dong Y, Zhang H, Li J, Li X. Epidermal stem cells maintain stemness via a biomimetic micro/nanofiber scaffold that promotes wound healing by activating the Notch signaling pathway. Stem Cell Res Ther 2021; 12:341. [PMID: 34112252 PMCID: PMC8193873 DOI: 10.1186/s13287-021-02418-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 05/25/2021] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Epidermal stem cells (EpSCs) play a vital role in wound healing and skin renewal. Although biomaterial scaffolds have been used for transplantation of EpSCs in wound healing, the ex vivo differentiation of EpSCs limits their application. METHODS To inhibit the differentiation of EpSCs and maintain their stemness, we developed an electrospun polycaprolactone (PCL)+cellulose acetate (CA) micro/nanofiber for the culture and transplantation of EpSCs. The modulation effect on EpSCs of the scaffold and the underlying mechanism were explored. Liquid chromatography-tandem mass spectrometry for label-free quantitative proteomics was used to analyze proteomic changes in EpSCs cultured on scaffolds. In addition, the role of transplanted undifferentiated EpSCs in wound healing was also studied. RESULTS In this study, we found that the PCL+CA micro/nanofiber scaffold can inhibit the differentiation of EpSCs through YAP activation-mediated inhibition of the Notch signaling pathway. Significantly differentially expressed proteomics was observed in EpSCs cultured on scaffolds and IV collagen-coated culture dishes. Importantly, differential expression levels of ribosome-related proteins and metabolic pathway-related proteins were detected. Moreover, undifferentiated EpSCs transplanted with the PCL+CA scaffold can promote wound healing through the activation of the Notch signaling pathway in rat full-thickness skin defect models. CONCLUSIONS Overall, our study demonstrated the role of the PCL+CA micro-nanofiber scaffold in maintaining the stemness of EpSCs for wound healing, which can be helpful for the development of EpSCs maintaining scaffolds and exploration of interactions between biomaterials and EpSCs.
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Affiliation(s)
- Zhixiao Lin
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China
| | - Congying Zhao
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China
| | - Zhanjun Lei
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China
| | - Yuheng Zhang
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China
| | - Rong Huang
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China
| | - Bin Lin
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China
| | - Yuchen Dong
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China
| | - Hao Zhang
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China
| | - Jinqing Li
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China.
| | - Xueyong Li
- Department of Plastic Surgery, Tangdu Hospital, Airforce Military Medical University, Xi'an, 710038, China.
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Li T, Qian D, Guoyan J, Lei Z. Downregulated long noncoding RNA LUCAT1 inhibited proliferation and promoted apoptosis of cardiomyocyte via miR-612/HOXA13 pathway in chronic heart failure. Eur Rev Med Pharmacol Sci 2021; 24:385-395. [PMID: 31957853 DOI: 10.26355/eurrev_202001_19937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Long non-coding RNAs (lncRNAs) have been reported to play important roles in numerous kinds of cardiovascular disease, including chronic heart failure (CHF). In this study, we mainly focused on investigating the potential roles of lncRNA LUCAT1 patients with CHF. PATIENTS AND METHODS RT-PCR was used to detect the expressions of LUCAT1 and miR-612 in serum samples of CHF patients (n=60) and healthy volunteers. Relationships between the expressions of LUCAT1 and miR-612, LUCAT1 and overall survival (OS) were analyzed using the Kaplan-Meier method. Si-LUCAT1 and miR-612 mimic were constructed and respectively transfected into AC16 cells to explore the functions of LUCAT1 and miR-612. Cell proliferation abilities were detected by CCK-8 assay AC16 cells. Cell apoptotic rates were measured by flow cytometry (FACS) analysis. Western blot (WB) was performed to detect the protein levels of HOXA13, Bcl-2, Bax, Bad and Cleaved Caspase3. In addition, luciferase gene reporter assay was used to prove the relationships between LUCAT1 and miR-612, miR-612 and HOXA13. RESULTS Firstly, we found that LUCAT1 was decreased for 1.7 folds in CHF patients, which was correlated with poor prognosis patients. LUCAT1 repression inhibited cell proliferation and promoted cell apoptosis in human cardiomyocyte cell line AC16 cells. Furthermore, we found that miR-612 was increased for 2.0 folds in CHF patients, which was negatively interacted with LUCAT1 expression. Luciferase gene reporter assay demonstrated that LUCAT1 could directly bind with miR-612 in AC16 cells. Moreover, miR-612 overexpression also inhibited cell proliferation and promoted cell apoptosis in AC16 cells. Luciferase reporter assay indicated that miR-612 could directly target at HOXA13 in AC16 cells, which was associated with cell proliferation and apoptosis. Finally, miR-612 inhibitor was transfected into AC16 cells with si-LUCAT1. The results showed that the inhibited cell proliferation and promoted cell apoptosis were reversed, which confirmed that LUCAT1 repression inhibited cell proliferation and promoted apoptosis via miR-612/HOXA13 axis in CHF patients. CONCLUSIONS According to the above results, our study revealed that LUCAT1 was decreased in CHF patients, which was correlated with poor prognosis of CHF patients. Furthermore, the downregulation of LUCAT1 inhibited cell proliferation and promoted cell apoptosis via targeting miR-612/HOXA13 axis. Our results elucidated a potential mechanism underlying cardiomyocyte apoptosis, which might be used as a promising prognostic marker and a potential target for CHF patients.
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Affiliation(s)
- T Li
- Department of ICU, The Third Affiliated Hospital of Chongqing Medical University (Gener Hospital), Chongqing, China.
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15
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Pang M, Shi Z, Lei Z, Ge Y, Jiang S, Cao L. Structure and thermal properties of beeswax-based oleogels with different types of vegetable oil. Grasas y Aceites 2020. [DOI: 10.3989/gya.0806192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Beeswax-based oleogels with different types of vegetable oil, including camellia oil (CO), soybean oil (SO), sunflower oil (SFO), or flaxseed oil (FO), were prepared and their structure and thermal properties were evaluated. The critical concentration of oleogel obtained from each of CO, SO, and SFO at 25 °C was 3% (w/w), and that from FO was 4%. Thermal measurements revealed similar thermodynamic curves for oleogels in different lipid phases. X-Ray diffraction showed orthorhombic perpendicular subcell packing and characteristic peaks of the β’ form. Furthermore, a morphology analysis of the crystals showed that they were needle shaped. Fourier transform-infrared spectra revealed that beeswax-based oleogels were formed via non-covalent bonds and may be stabilized with physical entanglements. The oleogels showed oil type-dependent oxidative abilities, but they were all stable and showed no obvious changes in peroxide value during 90 days of storage at 5 °C.
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16
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Fritzsche B, Mutschke G, Meinel TJ, Yang X, Lei Z, Eckert K. Oscillatory surface deformation of paramagnetic rare-earth solutions driven by an inhomogeneous magnetic field. Phys Rev E 2020; 101:062601. [PMID: 32688567 DOI: 10.1103/physreve.101.062601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/14/2020] [Indexed: 11/07/2022]
Abstract
The deformation of the free surface of a paramagnetic liquid subjected to a nonuniform magnetic field is studied. A transient deformation of the surface caused by the interplay of gravity, magnetic field, and surface tension is observed when a permanent magnet is moved vertically downward to the free surface of the liquid. Different concentrations of rare-earth-metal salt (DyCl_{3}) are used and different magnet velocities are studied. The deformation of the interface is followed optically by means of a microscope and recorded with a high-speed camera. The experimental results are compared and discussed with complementary numerical simulations. Detailed results are given for the static shape of the deformed surface and the temporal evolution of the surface deformation below the center of the magnet. The frequency of the surface oscillations is found to depend on the concentration of the salt and is compared with analytical findings. Finally, a potential application of the effects observed is presented.
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Affiliation(s)
- B Fritzsche
- Institute of Process Engineering and Environmental Technology, Technische Universität Dresden, 01062 Dresden, Germany
| | - G Mutschke
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Fluid Dynamics, Bautzener Landstrasse 400, 01328 Dresden, Germany
| | - T J Meinel
- Institute of Process Engineering and Environmental Technology, Technische Universität Dresden, 01062 Dresden, Germany
| | - X Yang
- Institute of Process Engineering and Environmental Technology, Technische Universität Dresden, 01062 Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Fluid Dynamics, Bautzener Landstrasse 400, 01328 Dresden, Germany
| | - Z Lei
- Institute of Process Engineering and Environmental Technology, Technische Universität Dresden, 01062 Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Fluid Dynamics, Bautzener Landstrasse 400, 01328 Dresden, Germany
| | - K Eckert
- Institute of Process Engineering and Environmental Technology, Technische Universität Dresden, 01062 Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Fluid Dynamics, Bautzener Landstrasse 400, 01328 Dresden, Germany
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17
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Zhang B, Lei Z, Liu ZQ, Zheng YG. Improvement of gibberellin production by a newly isolated Fusarium fujikuroi mutant. J Appl Microbiol 2020; 129:1620-1632. [PMID: 32538506 DOI: 10.1111/jam.14746] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/20/2020] [Accepted: 06/08/2020] [Indexed: 12/31/2022]
Abstract
AIMS To obtain and investigate the potential mechanism for GA3 production in Fusarium fujikuroi GA-251, a high GA3 producer. METHODS AND RESULTS Fusarium fujikuroi IMI 58289 was bred with Cobalt-60 (60 Co) radiation and lithium chloride treatment. The best mutant strain GA-251 was obtained for the subsequent optimization of fermentation conditions. The yield of GA3 by GA-251 was 2100 mg l-1 , while the wild-type strain was 100 mg l-1 , which is a 21-fold increase in the yield. To elucidate the mechanism of high GA3 yield of GA-251, the genome was sequenced and compared with wild-type strain IMI 58289. The results showed 2295 single nucleotide polymorphisms, 1242 small indels and 30 structural variants. These mutations were analysed and enriched in the MAPK signalling pathway, the mRNA surveillance pathway and endocytosis. The potential reasons for the improved GA3 biosynthesis were investigated. CONCLUSIONS The potential mechanism of high GA3 yield was attributed to endocytosis pathway and histone modification proteins family. SIGNIFICANCE AND IMPACT OF THE STUDY A mutant strain GA-251 in this work that could potentially be utilized in the industrial yield of GA3 . The comparative genome analysis would shed light onto the mechanism of yield improvement and be a theoretical guide for further metabolic engineering.
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Affiliation(s)
- B Zhang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China.,Engineering Research Center of Bioconversion and Bio-purification, Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Z Lei
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China.,Engineering Research Center of Bioconversion and Bio-purification, Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Z-Q Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China.,Engineering Research Center of Bioconversion and Bio-purification, Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Y-G Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China.,Engineering Research Center of Bioconversion and Bio-purification, Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang, China
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18
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Huang R, He Z, Bian Y, Lei Z, Wang H, Long Y, Hu M, Li J, Xu L, Li J, Li X. A Biomimetic Basement Membrane Substitute Based on Tri-Layered Nanofibrous Scaffold for Skin Reconstruction. J Biomed Nanotechnol 2019; 15:2332-2350. [PMID: 31748015 DOI: 10.1166/jbn.2019.2865] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Developing basement membranes (BMs) substitute remains major problem for constructing functional tissue engineered skin because of its complex structure and multifunction of regulating cellular behavior. Herein, a stable electrospinning method was employed to generate a biomimetic model of natural BMs based on novel scaffold electrospun from Poly(ɛ-caprolactone) (PCL) and cellulose acetate (CA) incorporated with chitosan (CS). The morphology, structure, surface hydrophilicity, roughness and mechanical tensile strength of prepared monolayer and tri-layered scaffold were comprehensively compared. Besides, co-culture system via seeding keratinocytes (Kcs) and fibroblasts (Fbs) on opposite side of tri-layered scaffold revealed more effective segregation of both cell types within the central nanofibrous barrier together with enhanced cell attachment and proliferation than that on the monolayer scaffold. Moreover, the deposition of type VII collagen and laminin-5 was examined in comparison with normal skin BMs. Furthermore, the histological studies revealed characteristics of reconstructing BM zone at the junction of dermis-epidermis after in vivo implantation for 2 weeks, and wound healing while the seeded cells interacted with the endogenous cells. Additionally, the expression of active integrin β1 and phosphorylated focal adhesion kinase (FAK) was promoted with treatment of tri-layered scaffold. This study stressed that this tri-layer scaffold might provoke biomimetic responses of Kcs and Fbs and thus be applied for future development of BMs containing tissues.
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19
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Huang M, Marinaro G, Yang X, Fritzsche B, Lei Z, Uhlemann M, Eckert K, Mutschke G. Mass transfer and electrolyte flow during electrodeposition on a conically shaped electrode under the influence of a magnetic field. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.04.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Kang X, Wang Y, Liang J, Lei Z. 810 Expression of activity-induced Cytidine Deaminase in melanoma and its correlation with the BRAF mutation and clinicopathological features. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Chen X, Li J, Li Q, Zhang W, Lei Z, Qin D, Pan Z, Li J, Li X. Spatial-Temporal Changes of Mechanical Microenvironment in Skin Wounds During Negative Pressure Wound Therapy. ACS Biomater Sci Eng 2019; 5:1762-1770. [PMID: 33405552 DOI: 10.1021/acsbiomaterials.8b01554] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cell migration, proliferation, and differentiation are regulated by mechanical cues during skin wound healing. Negative pressure wound therapy (NPWT) reduces the healing period by optimizing the mechanical microenvironment of the wound bed. Under NPWT, it remains elusive how the mechanical microenvironment (e.g., stiffness, strain gradients) changes both in time and space during wound healing. To illustrate this, the healing time of full-thickness skin wounds under NPWT, with pressure settings ranging from -50 to -150 mm Hg, were evaluated and compared with gauze dressing treatments (control group), and three-dimensional finite element models of full-thickness skin wounds on days 1 and 5 after treatment were developed on the basis of MR 3D imaging data. Shear wave elastography (SWE) was applied to detect the stiffness of wound soft tissue on days 1 and 5, and nonlinear finite element analysis (FEA) was used to represent the spatial-temporal environment of the 3D strain field of the wound under NPWT vs the control group. Compared with the control group, NPWT with -50, -80, and -125 mm Hg promoted wound healing. SWE showed that the elastic modulus of wounded skin increased during healing. Meanwhile, the elastic modulus in wounded skin under NPWT was significantly smaller than in the control group. Strain and its gradient decreased under NPWT during wound healing, while no significant change was observed in the control group. This study, which is based on MR 3D imaging, shear wave elastography, and nonlinear FEA, provides an in-depth understanding of changes of the skin mechanical microenvironment under NPWT in the time-space dimension and the associated wound healing.
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22
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Dondik Y, Lei Z, Gaskins J, Pagidas K. Minichrosome maintenance complex component 8 and 9 gene expression in the menstrual cycle and unexplained primary ovarian insufficiency. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Zhang C, Lei Z, Zhang J, Wang Y, Liu Y. Cure behavior and compatibilization of epoxide hyperbranched polyurethane on silica/benzoxazine blend. J Appl Polym Sci 2018. [DOI: 10.1002/app.46879] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- C. Zhang
- Department of Chemical Engineering; School of Chemical Engineering and Technology, Xi'an Jiaotong University; Xi'an 710049 China
| | - Z. Lei
- Department of Chemical Engineering; School of Chemical Engineering and Technology, Xi'an Jiaotong University; Xi'an 710049 China
| | - J. Zhang
- Department of Applied Chemistry; School of Science, Xi'an Jiaotong University; Xi'an 710049 China
| | - Y. Wang
- Department of Chemical Engineering; School of Chemical Engineering and Technology, Xi'an Jiaotong University; Xi'an 710049 China
| | - Y. Liu
- Department of Chemical Engineering; School of Chemical Engineering and Technology, Xi'an Jiaotong University; Xi'an 710049 China
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Mol E, Lei Z, Bakker MH, Vader P, Schiffelers RM, Dankers PYW, Chamuleau SAJ, Doevendans PA, Goumans MJ, Sluijter JP. 202Slow release of cardiac progenitor cell-derived extracellular vesicles from a pH-switchable hydrogel. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- E Mol
- University Medical Center Utrecht, Experimental Cardiology, Utrecht, Netherlands
| | - Z Lei
- University Medical Center Utrecht, Experimental Cardiology, Utrecht, Netherlands
| | - M H Bakker
- Eindhoven University of Technology, Institute for Complex Molecular Systems, Eindhoven, Netherlands
| | - P Vader
- University Medical Center Utrecht, Experimental Cardiology and Laboratory of Clinical Chemistry and Haematology, Utrecht, Netherlands
| | - R M Schiffelers
- University Medical Center Utrecht, Laboratory of Clinical Chemistry and Haematology, Utrecht, Netherlands
| | - PYW Dankers
- Eindhoven University of Technology, Institute for Complex Molecular Systems, Eindhoven, Netherlands
| | - SAJ Chamuleau
- University Medical Center Utrecht, Experimental Cardiology, Utrecht, Netherlands
| | - P A Doevendans
- University Medical Center Utrecht, Experimental Cardiology, Utrecht, Netherlands
| | - M J Goumans
- Leiden University Medical Center, Molecular Cell Biology, Leiden, Netherlands
| | - J P Sluijter
- University Medical Center Utrecht, Experimental Cardiology, Utrecht, Netherlands
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Xihua L, Lei Z, Chaoping H, Shui zhen Z, Yi W. A comprehensive database of duchenne and becker muscular dystrophy patients in children's hospital of fudan university. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tang C, Hou Y, Wang H, Wang K, Xiang H, Wan X, Xia Y, Li J, Wei W, Xu S, Lei Z, Pawlik TM, Wang H, Wu M, Shen F. Aspartate β-hydroxylase disrupts mitochondrial DNA stability and function in hepatocellular carcinoma. Oncogenesis 2017; 6:e362. [PMID: 28714949 PMCID: PMC5541716 DOI: 10.1038/oncsis.2017.64] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 06/12/2017] [Accepted: 06/14/2017] [Indexed: 02/07/2023] Open
Abstract
The mechanism of aberrant mitochondrial genome and function in hepatocellular carcinoma (HCC) remains largely unknown. Our previous study demonstrated an increased expression of aspartate β-hydroxylase (ASPH) in HCC tissues, which was associated with tumor invasiveness and a worse prognosis. Currently, we unexpectedly observed the presence of ASPH in purified mitochondrial protein fraction. In addition, immunostaining of both exogenously and endogenously expressed ASPH showed a colocalization with mitochondrial biomarkers. This study aimed to investigate whether the mitochondrial ASPH is involved in mitochondrial malfunction in HCC. Our results showed that ASPH overexpression in HCC tissues was correlated with decreased copy numbers of displacement loop (D-loop) and NADH dehydrogenase subunit 1 (ND-1) and enhanced D-loop mutation, suggesting the disrupted mitochondrial DNA (mtDNA) stability. The reduced mtDNA copy numbers were associated with aggressive clinicopathological features of HCC. The loss of mtDNA integrity induced by enforced expression of ASPH was accompanied with mitochondrial dysfunction, which was characterized by the aberrant mitochondrial membrane potential, decreased ATP generation and enhanced reactive oxygen species. In contrast, knocking down ASPH by siRNA in HCC cell lines showed the opposite impact on mtDNA integrity and function. Mass spectrometry and co-immunoprecipitation further identified that ASPH interacted with histone H2A member X (H2AX). ASPH overexpression diminished the interaction between H2AX and mitochondrial transcription factor A (mtTFA), an important DNA-binding protein for mtDNA replication, which then reduced the binding of mtTFA to D-loop region. Collectively, our results demonstrate that ASPH overexpression disrupts the mtDNA integrity through H2AX-mtTFA signal, thereby affecting mitochondrial functions in HCC.
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Affiliation(s)
- C Tang
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China.,Department of Hepatobiliary Surgery, The Daping Hospital, Third Military Medical University, Chongqing, China
| | - Y Hou
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - H Wang
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - K Wang
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - H Xiang
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - X Wan
- Department of Clinical Database, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Y Xia
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - J Li
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - W Wei
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - S Xu
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Z Lei
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - T M Pawlik
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, OH, USA
| | - H Wang
- National Scientific Center for Liver Cancer, Second Military Medical University, Shanghai, China
| | - M Wu
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - F Shen
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
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Zhang S, Dai W, Lu Z, Lei Z, Yang B, He B, Zhou H, Cao J. Preparation and evaluation of cefquinome-loaded gelatin microspheres and the pharmacokinetics in pigs. J Vet Pharmacol Ther 2017; 41:117-124. [PMID: 28656695 DOI: 10.1111/jvp.12429] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 05/25/2017] [Indexed: 11/29/2022]
Abstract
Cefquinome (CEF) is widely used for veterinary clinical applications because of its broad spectrum and high efficiency. However, frequent administrations are required due to its short elimination half-life. In this study, cefquinome sulfate gelatin microspheres (CEF-GMS) were prepared as a sustained-release formulation using emulsion chemical cross-linking technique. Physical properties, stability, sustained-release property in vitro, and pharmacokinetics in pigs were assessed. The morphology of CEF-GMS showed a good sphericity with porous structure on the surface, and the mean diameter was 8.80 ± 0.78 μm, with 90.60 ± 3.98% of the total in the range of 5-20 μm. There were no significant changes of all estimated indexes in the stability tests. In vitro drug release study showed that the release of CEF from CEF-GMS was much slower than that from crude CEF in a release medium. Pharmacokinetic characteristics were evaluated following intramuscular administration of CEF-GMS or Cefquinome sulfate injection (CEF-Inj) in pigs at a dosage of 4 mg CEF/kg body weight. The plasma drug concentration-time data of CEF-GMS and CEF-Inj were both best fitted by two-compartment models with first-order absorption, and the elimination half-life of CEF-GMS was almost 10 times that of CEF-Inj. Overall, CEF-GMS might be used as a sustained-release formulation of CEF for veterinary clinical applications.
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Affiliation(s)
- S Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China.,Unit of Animal Infectious Diseases, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - W Dai
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Z Lu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Z Lei
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - B Yang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - B He
- Institute of Animal Husbandry and Veterinary, Wuhan Academy of Agricultural Science and Technology, Wuhan, Hubei, China
| | - H Zhou
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China.,Unit of Animal Infectious Diseases, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - J Cao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
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Xue H, Ting G, Xue J, Lu H, Sun X, Li M, Zhou Y, Lei Z, Zhang Y. Construction and identification of a model for HJURP gene defect expression in human embryo villus cells. CLIN EXP OBSTET GYN 2017. [DOI: 10.12891/ceog3451.2017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Haocheng L, Han W, Lei Z, Lianming Z, Defeng L, Wenhao T, Jiaming M, Zhe Z, Yuzhuo Y, Hongliang Z, Kai H, Hui J. 023 Sexual Behavior and PDE5-Is Administration Habits Among Chinese Male: Data From the 2016 Internet Survey of Sexual Life. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.11.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Li X, Gou C, Yao L, Lei Z, Gu T, Ren F, Wen T. Patients with HBV-related acute-on-chronic liver failure have increased concentrations of extracellular histones aggravating cellular damage and systemic inflammation. J Viral Hepat 2017; 24:59-67. [PMID: 27660136 DOI: 10.1111/jvh.12612] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 08/05/2016] [Indexed: 12/30/2022]
Abstract
Acute-on-chronic liver failure (ACLF) is the most common type of liver failure and associated with grave consequences. Systemic inflammation has been linked to its pathogenesis and outcome, but the identifiable triggers are absent. Recently, extracellular histones, especially H4, have been recognized as important mediators of cell damage in various inflammatory conditions. This study aimed to investigate whether extracellular histones have clinical implications in patients with hepatitis B virus (HBV)-related ACLF. One hundred and twelve patients with HBV-related ACLF, 90 patients with chronic hepatitis B, 88 patients with HBV-related liver cirrhosis and 40 healthy volunteers were entered into this study. Plasma histone H4 levels, cytokine profile and clinical data were obtained. Besides, patient's sera were incubated overnight with human L02 hepatocytes or monocytic U937 cells in the presence or absence of antihistone H4 antibody, and cellular damage and cytokine production were evaluated. We found that plasma histone H4 levels were greatly increased in patients with ACLF as compared with chronic hepatitis B, liver cirrhosis and healthy control subjects and were significantly associated with disease severity, systemic inflammation and outcome. Notably, ACLF patients' sera incubation decreased cultured L02 cell integrity and induced profound cytokine production in the supernatant of U937 cells. Antihistone H4 antibody treatment abrogated these adverse effects, thus confirming a cause-effect relationship between extracellular histones and organ injury/dysfunction. The data support the hypothesis that the increased extracellular histone levels in ACLF patients may aggravate disease severity by inducing cellular injury and systemic inflammation. Histone-targeted therapies may have potentially interventional value in clinical practice.
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Affiliation(s)
- X Li
- Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - C Gou
- Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - L Yao
- Department of Forth Cadre, Chinese PLA Army General Hospital, Beijing, China
| | - Z Lei
- Medical Research Center, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - T Gu
- Department of Oncology, First Hospital of Qinhuangdao, Qinhuangdao, Hebei Province, China
| | - F Ren
- Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - T Wen
- Medical Research Center, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
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Cui L, Li J, Long Y, Hu M, Li J, Lei Z, Wang H, Huang R, Li X. Vascularization of LBL structured nanofibrous matrices with endothelial cells for tissue regeneration. RSC Adv 2017. [DOI: 10.1039/c6ra26931a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The aligned LBL scaffold promoted host vessel infiltration into the scaffolds and integration with in vitro prefabricated vascular structures.
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Affiliation(s)
- Lei Cui
- Department of Plastic Surgery
- Tangdu Hospital
- Fourth Military Medical University
- Xi'an 710038
- China
| | - Jing Li
- Department of Plastic Surgery
- Tangdu Hospital
- Fourth Military Medical University
- Xi'an 710038
- China
| | - Yunze Long
- College of Physics
- Qingdao University
- Qingdao 266071
- China
| | - Min Hu
- Department of Applied Chemistry
- School of Science
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Jinqing Li
- Department of Plastic Surgery
- Tangdu Hospital
- Fourth Military Medical University
- Xi'an 710038
- China
| | - Zhanjun Lei
- Department of Plastic Surgery
- Tangdu Hospital
- Fourth Military Medical University
- Xi'an 710038
- China
| | - Hongjun Wang
- Department of Chemistry, Chemical Biology and Biomedical Engineering
- Stevens Institute of Technology
- Hoboken
- USA
| | - Rong Huang
- Department of Plastic Surgery
- Tangdu Hospital
- Fourth Military Medical University
- Xi'an 710038
- China
| | - Xueyong Li
- Department of Plastic Surgery
- Tangdu Hospital
- Fourth Military Medical University
- Xi'an 710038
- China
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32
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Xue HQ, Ting G, Xue JJ, Lu HY, Sun XY, Li M, Zhou Y, Lei Z, Zhang YP. Construction and identification of a model for HJURP gene defect expression in human embryo villus cells. CLIN EXP OBSTET GYN 2017; 44:434-439. [PMID: 29949288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To construct a lentiviral vector for RNA interference (RNAi) of the HJURP gene and to identify the silencing efficiency in the human embryo villus cells and to provide a human embryo villus cells multiplication and chromosome segregation. MATERIALS AND METHODS In accordance with the study, three specific sequences of siRNA targeting HJURP gene were designed, synthesized, then the complementary DNA containing both sense and antisense oligonucleotides of the targeting sequences were annealed and inserted into the lentiviral vector.The correct clonings were confirmed by PCR and sequencing. The most effective recombinant lentivirus vector was screened, and the recombinant plasmids with the lentivirus packaging mixes were co-transfected into 293T cells to obtain packaged lentivirus particles. Then viral titer was determined. The silencing efficiency of target gene in human embryo villus cells was detected by Real-Time PCR. RESULTS DNA sequencing showed that the shRNA sequence was successfully inserted into the lentivirus vector. The recombinant lentiviral vector was successfully transfected into 293T cells. The recombinant lentivirus had a titer of 108 PFU/ml. After silencing HJURP gene in human embryo villus cells, the expression level of HJURP mRNA decreased significantly and the RNAi efficiency was greater than 70%. CONCLUSION A lentiviral shRNA expression vector targeting the HJURP gene was successfully constructed and may effectively silence the target gene at a cellular level, which provides a experimental model for the influence of HJURP gene expressing inhibition on human embryo villus cells multiplication and chromosome segregation.
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Cui L, Li Y, Lv X, Li J, Wang X, Lei Z, Li X. Expression of MicroRNA-301a and its Functional Roles in Malignant Melanoma. Cell Physiol Biochem 2016; 40:230-244. [PMID: 27855389 DOI: 10.1159/000452540] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND/AIMS Although microRNA-301a has been reported to function as an oncogene in many human cancers, the roles of miR-301a in malignant melanoma (MM) is unclear. The present study aims to investigate the functional roles of miR-301a in MM and its possible molecular mechanisms. METHODS Quantitative real-time PCR (qRT-PCR) assay was performed to detect the expression of miR-301a in MM tissues, and analyze its correlation with metastasis and prognosis of MM patients. In vitro, miR-301a was ectopically expressed using overexpression and knock-down strategies, and the effects of miR-301a expression on growth, apoptosis, migration, invasion and chemosensitivity of MM cells were further investigated. Furthermore, the potential and functional target gene was identified by luciferase reporter, qRT-PCR, Western blot assays. RESULTS We showed that the expression of miR-301a was significantly upregulated in MM tissues, and upregulation of miR-301a correlated with metastasis and poor prognosis of MM patients. Transfection of miR-301a/inhibitor significantly inhibited growth, colony formation, migration, invasion and enhanced apoptosis and chemosensitivity in MM cells, while transfection of miR-301a/mimic could induce the inverse effects on phenotypes of MM cells. Luciferase reporter, qRT-PCR and Western blot assays showed that phosphatase and tensin homolog (PTEN) was a direct and functional target of miR-301a. It was also observed that the Akt and FAK signaling pathways were involved in miR-301/PTEN-promoting MM progression. CONCLUSION Taken together, our study suggests that miR-301a may be used as a potential therapeutic target in the treatment of human MM.
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Affiliation(s)
- Lei Cui
- Department of Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, PR China
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Hyman JD, Jiménez-Martínez J, Viswanathan HS, Carey JW, Porter ML, Rougier E, Karra S, Kang Q, Frash L, Chen L, Lei Z, O'Malley D, Makedonska N. Understanding hydraulic fracturing: a multi-scale problem. Philos Trans A Math Phys Eng Sci 2016; 374:rsta.2015.0426. [PMID: 27597789 PMCID: PMC5014299 DOI: 10.1098/rsta.2015.0426] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/28/2016] [Indexed: 06/06/2023]
Abstract
Despite the impact that hydraulic fracturing has had on the energy sector, the physical mechanisms that control its efficiency and environmental impacts remain poorly understood in part because the length scales involved range from nanometres to kilometres. We characterize flow and transport in shale formations across and between these scales using integrated computational, theoretical and experimental efforts/methods. At the field scale, we use discrete fracture network modelling to simulate production of a hydraulically fractured well from a fracture network that is based on the site characterization of a shale gas reservoir. At the core scale, we use triaxial fracture experiments and a finite-discrete element model to study dynamic fracture/crack propagation in low permeability shale. We use lattice Boltzmann pore-scale simulations and microfluidic experiments in both synthetic and shale rock micromodels to study pore-scale flow and transport phenomena, including multi-phase flow and fluids mixing. A mechanistic description and integration of these multiple scales is required for accurate predictions of production and the eventual optimization of hydrocarbon extraction from unconventional reservoirs. Finally, we discuss the potential of CO2 as an alternative working fluid, both in fracturing and re-stimulating activities, beyond its environmental advantages.This article is part of the themed issue 'Energy and the subsurface'.
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Affiliation(s)
- J D Hyman
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - J Jiménez-Martínez
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - H S Viswanathan
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - J W Carey
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - M L Porter
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - E Rougier
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - S Karra
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Q Kang
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - L Frash
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - L Chen
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Z Lei
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - D O'Malley
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - N Makedonska
- Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, USA
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Lei Z. 1071 Effect of neuromedin u on pig immune regulation. J Anim Sci 2016. [DOI: 10.2527/jam2016-1071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bian Y, Deng C, Li W, Lei Z, Li Y, Li X. A Comparative Study on the Biological Characteristics of Human Adipose-Derived Stem Cells from Lipectomy and Liposuction. PLoS One 2016; 11:e0162343. [PMID: 27610618 PMCID: PMC5017729 DOI: 10.1371/journal.pone.0162343] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 08/22/2016] [Indexed: 01/07/2023] Open
Abstract
PURPOSES To compare the biological behaviors of human adipose-derived stem cells (ADSCs) isolated from adipose tissue by lipectomy and liposuction, with the purpose of providing the basis for clinical application. METHODS The proliferation and apoptosis of ADSCs were analyzed by CCK-8 assay and flow cytometry. Cell migration was measured by a wound healing assay. An ELISA assay was used to evaluate paracrine functions. SOD and MDA were tested by xanthine oxidase and thiobarbituric acid reactions, respectively. In addition, we used a CCK-8, LDH assay and flow cytometry to analyze the proliferation and apoptosis of ADSCs treated with lidocaine or adrenaline. RESULTS The viable ADSCs yield from liposuction was significantly lower than that from lipectomy, while the apoptosis of cells from liposuction was significantly higher than from lipectomy. The paracrine secretion of the two sources of ADSCs was highest when treated with 10-7 mol/L insulin and 10 ng/mL TGF-α, but there were no significant differences in VEGF, IL-6, IL-8 or HGF levels. The ADSCs from lipectomy migrated faster than those from liposuction, and SOD in the lipectomy group was higher than in the liposuction group, whereas MDA of the lipectomy group was lower than that of the liposuction group. The proliferation ADSCs treated with lidocaine or adrenaline was greatly decreased, while apoptosis was significantly increased, and cytotoxicity of lidocaine or adrenaline to ADSCs was dose-dependent. CONCLUSIONS Compared with ADSCs from liposuction, the ADSCs from lipectomy have better biological characteristics. Lidocaine and adrenaline decreased the viability of ADSCs, and their cytotoxicity to ADSCs was dose-dependent.
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Affiliation(s)
- Yongqian Bian
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shannxi, China
| | - Chen Deng
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shannxi, China
| | - Wangzhou Li
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shannxi, China
| | - Zhanjun Lei
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shannxi, China
| | - Yuejun Li
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shannxi, China
- * E-mail: (XL); (YL)
| | - Xueyong Li
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shannxi, China
- * E-mail: (XL); (YL)
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Ehlers K, Lin B, Li X, Pagidas K, Lei Z. Dysregulation of the hippo pathway in selective theca cell phosphatase and tensin homolog (tPten) mutant mice exhibiting a Polycystic Ovarian Syndrome (PCOS)-like phenotype. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Liao W, Chen L, Yu B, Lei Z, Wu X, Yang J, Ren J. Cell-based evaluation of a novel Dictyophora indusiata polysaccharide against oxidative-induced erythrocyte hemolysis. Cell Mol Biol (Noisy-le-grand) 2016; 62:38-44. [PMID: 26828985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 01/03/2016] [Indexed: 06/05/2023]
Abstract
The protective effect of a polysaccharide from Dictyophora indusiata(DP1)against oxidative hemolysis was comprehensively evaluated. The 2, 2-azobis (2-amidino-propane) dihydrochloride (AAPH)-induced erythrocyte hemolysis assay showed that DP1 exhibited excellent anti-hemolytic activity(87.4% hemolysis suppression ratio at 20 nmol/mL). Also, the formation of conjugated diene induced by cupric chloride (CuCl2) in plasma was significantly inhibited by DP1. Besides, DP1 could effectively inhibit AAPH-induced overproduction of reactive oxygen species (81.5% inhibition at 20 nmol/mL) and alleviated the enhancement of intracellular antioxidant enzymes including superoxide dismutase(SOD), glutathione peroxidase (GPX) and catalase (CAT) activities. Also, the malondialdehyde (MDA) formation caused by oxidative stress was suppressed by 57.0% at DP1 concentration of 20 nmol/mL. Taken together, the possible intracellular antioxidant detoxifying mechanism of DP1 was probably via preserving the activities of the antioxidant enzymes (SOD, GPx and CAT) as well as inhibiting lipid peroxidation, and thus alleviated erythrocytes oxidation and plasma oxidation.
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Affiliation(s)
- W Liao
- South China University of Technology College of Light Industry and Food Sciences Guangzhou China
| | - L Chen
- South China University of Technology College of Light Industry and Food Sciences Guangzhou China
| | - B Yu
- Zhengzhou University School of Pharmaceutical Sciences Zhengzhou China
| | - Z Lei
- South China University of Technology College of Light Industry and Food Sciences Guangzhou China
| | - X Wu
- South China University of Technology College of Light Industry and Food Sciences Guangzhou China
| | - J Yang
- South China University of Technology College of Light Industry and Food Sciences Guangzhou China
| | - J Ren
- South China University of Technology College of Light Industry and Food Sciences Guangzhou China
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Li X, Meng X, Wang X, Li Y, Li W, Lv X, Xu X, Lei Z, Li J. Human acellular dermal matrix allograft: A randomized, controlled human trial for the long-term evaluation of patients with extensive burns. Burns 2015; 41:689-99. [DOI: 10.1016/j.burns.2014.12.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/13/2014] [Accepted: 12/05/2014] [Indexed: 11/29/2022]
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Huang R, Li W, Lv X, Lei Z, Bian Y, Deng H, Wang H, Li J, Li X. Biomimetic LBL structured nanofibrous matrices assembled by chitosan/collagen for promoting wound healing. Biomaterials 2015; 53:58-75. [DOI: 10.1016/j.biomaterials.2015.02.076] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 02/11/2015] [Accepted: 02/15/2015] [Indexed: 10/23/2022]
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Wang P, Yang L, Li H, Lei Z, Yang X, Liu C, Jiang H, Zhang L, Zhou Z, Reinhardt JD, He C. Effects of whole-body vibration training with quadriceps strengthening exercise on functioning and gait parameters in patients with medial compartment knee osteoarthritis: a randomised controlled preliminary study. Physiotherapy 2015; 102:86-92. [PMID: 26111989 DOI: 10.1016/j.physio.2015.03.3720] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 03/05/2015] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To compare the effects of whole-body vibration training (WBVT) with quadriceps strengthening exercise (QSE) with QSE alone on functioning and gait parameters in patients with medial compartment knee osteoarthritis. DESIGN Randomised controlled preliminary study. SETTING Department of Rehabilitation Medicine, West China Hospital, Chengdu, Sichuan, People's Republic of China. SUBJECTS Thirty-nine patients with medial compartment knee osteoarthritis. INTERVENTIONS Participants were assigned at random to one of two groups. MAIN MEASURES Visual analogue scale (VAS) for pain, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), timed up and go test (TUG), 6-minute walk distance test (6MWD), and three-dimensional gait analysis during level walking at baseline, 12 weeks and 16 weeks (follow-up). RESULTS Compared with baseline, significant improvements in VAS, all WOMAC scales, TUG, 6MWD and all spatiotemporal parameters were seen in both the WBVT+QSE group and the QSE alone group at 12 and 16 weeks. However, the WBVT+QSE group showed greater improvements than the QSE alone group in WOMAC scales (physical function), TUG, 6MWD and cadence at 12 weeks. No differences were found between the WBVT+QSE and QSE alone groups in VAS, WOMAC scales (pain, stiffness), kinematic and kinetic gait parameters, and other spatiotemporal parameters at 12 weeks and 16 weeks. CONCLUSION Over a 3-month period, WBVT in combination with QSE improved symptoms, physical function and spatiotemporal parameters in patients with medial compartment knee osteoarthritis, and led to greater improvement than QSE alone in WOMAC scales (physical function), TUG, 6MWD and cadence.
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Affiliation(s)
- P Wang
- Rehabilitation Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China; Key Laboratory of Rehabilitation Medicine in Sichuan, Chengdu, Sichuan, People's Republic of China
| | - L Yang
- Rehabilitation Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China; Key Laboratory of Rehabilitation Medicine in Sichuan, Chengdu, Sichuan, People's Republic of China
| | - H Li
- Institute for Disaster Management and Reconstruction of Sichuan University and Hong Kong Polytechnic University, Chengdu, Sichuan, People's Republic of China
| | - Z Lei
- Rehabilitation Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - X Yang
- Rehabilitation Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China; Key Laboratory of Rehabilitation Medicine in Sichuan, Chengdu, Sichuan, People's Republic of China
| | - C Liu
- Rehabilitation Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China; Key Laboratory of Rehabilitation Medicine in Sichuan, Chengdu, Sichuan, People's Republic of China
| | - H Jiang
- Rehabilitation Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - L Zhang
- Rehabilitation Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Z Zhou
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - J D Reinhardt
- Institute for Disaster Management and Reconstruction of Sichuan University and Hong Kong Polytechnic University, Chengdu, Sichuan, People's Republic of China; Swiss Paraplegic Research, Nottwil, Lucerne, Switzerland; Department of Health Sciences and Health Policy, University of Lucerne, Lucerne, Switzerland
| | - C He
- Rehabilitation Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China; Key Laboratory of Rehabilitation Medicine in Sichuan, Chengdu, Sichuan, People's Republic of China.
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Wang L, Yang H, Lei Z, Zhao J, Chen Y, Chen P, Li C, Zeng Y, Liu Z, Liu X, Zhang HT. Repression of TIF1γ by SOX2 promotes TGF-β-induced epithelial-mesenchymal transition in non-small-cell lung cancer. Oncogene 2015; 35:867-77. [PMID: 25961934 DOI: 10.1038/onc.2015.141] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 03/14/2015] [Accepted: 03/20/2015] [Indexed: 12/19/2022]
Abstract
TIF1γ is a novel regulator of transforming growth factor (TGF)-β/Smad signaling. Our previous studies show that dysregulated expression of transcriptional intermediary factor 1 γ (TIF1γ) and abnormal TGF-β/Smad signaling are implicated in non-small-cell lung cancer (NSCLC) separately. However, how TIF1γ contributes to NSCLC by controlling TGF-β/Smad signaling is poorly understood. Here, we investigated the mechanistic role of TIF1γ in TGF-β-induced epithelial-mesenchymal transition (EMT), as well as a link between TIF1γ and SOX2 in NSCLC. We show that TIF1γ is a downstream target of SOX2 in NSCLC cells. SOX2 overexpression negatively regulated TIF1γ promoter activity and thereby attenuated TIF1γ mRNA and protein expression levels; SOX2 knockdown significantly enhanced TIF1γ promoter activity and augmented TIF1γ expression. Moreover, TIF1γ mRNA expression was downregulated in human NSCLC tissues and negatively correlated with SOX2 protein, which was upregulated in NSCLC tissues. Importantly, knockdown of TIF1γ or SOX2 overexpression augmented SMAD4 (human Mad (mothers against decapentaplegic)-related homologous protein 4)-dependent transcriptional responses, and enhanced TGF-β-induced EMT and human NSCLC cell invasion; knockdown of SOX2 impaired TGF-β-induced EMT and NSCLC cell invasion. In an in vivo model of metastasis, knockdown of TIF1γ promotes NSCLC cell metastasis. In addition, our data suggested that TIF1γ inhibited TGF-β-induced EMT through competing with SMAD4 in NSCLC cells. Taken together, our findings reveal a new mechanism by which SOX2-mediated transcription repression of TIF1γ promotes TGF-β-induced EMT in NSCLC.
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Affiliation(s)
- L Wang
- Soochow University Laboratory of Cancer Molecular Genetics, Medical College of Soochow University, Suzhou, China.,Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China
| | - H Yang
- Soochow University Laboratory of Cancer Molecular Genetics, Medical College of Soochow University, Suzhou, China.,Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China
| | - Z Lei
- Soochow University Laboratory of Cancer Molecular Genetics, Medical College of Soochow University, Suzhou, China.,Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China
| | - J Zhao
- Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China.,Department of Thoracic and Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Medical College of Soochow University, Suzhou, China
| | - Y Chen
- Department of Thoracic and Cardiovascular Surgery, Second Affiliated Hospital of Soochow University, Medical College of Soochow University, Suzhou, China
| | - P Chen
- Systems Biology Laboratory, Research Programs Unit, Genome-Scale Biology, and Institute of Biomedicine, Biochemistry and Developmental Biology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8, Helsinki, Finland
| | - C Li
- Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China.,Department of Thoracic and Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Medical College of Soochow University, Suzhou, China
| | - Y Zeng
- Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China.,Department of Thoracic and Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Medical College of Soochow University, Suzhou, China
| | - Z Liu
- Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China.,Department of Thoracic and Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Medical College of Soochow University, Suzhou, China
| | - X Liu
- Soochow University Laboratory of Cancer Molecular Genetics, Medical College of Soochow University, Suzhou, China.,Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China
| | - H-T Zhang
- Soochow University Laboratory of Cancer Molecular Genetics, Medical College of Soochow University, Suzhou, China.,Suzhou Key Laboratory for Molecular Cancer Genetics, Suzhou, China
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Patel U, Sobowale K, Fan J, Liu NN, Kuwabara S, Lei Z, Sherer R, Voorhees BV. Cultural considerations for adaptation of an internet-based intervention
for depression prevention in Mainland China. Ann Glob Health 2015. [DOI: 10.1016/j.aogh.2015.02.985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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44
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Redding S, Li X, Wu G, Ko C, Cooney A, Bohler H, Lan ZJ, Lei Z. Transforming growth factor-B1 (TGF-B1) and fibroblast growth factor-7 (FGF-7) elevated in ovaries of selective theca cell phosphatase and tensin homolog mutant (tPtenMT) mice with PCOS-like phenotype. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lei Z, M Brandt M, Van Mil A, Grundmann S, Smits M, Van Middelaar B, Fukao T, Cheng C, Doevendans P, Sluijter JPG. P66MicroRNA-132/212 family promotes arteriogenesis by prolonging Ras-MAPK signaling. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu082.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Xin S, Li X, Wang Q, Huang R, Xu X, Lei Z, Deng H. Novel Layer-by-Layer Structured Nanofibrous Mats Coated by Protein Films for Dermal Regeneration. J Biomed Nanotechnol 2014; 10:803-10. [DOI: 10.1166/jbn.2014.1748] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Yang Z, Shi X, Zhang Y, Wang S, Lei Z, Liu X, Fan D. Retrospective analysis of factors affecting the efficacy of surgical treatment of the scar. MINERVA CHIR 2014; 69:83-89. [PMID: 24504221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The scar is a major problem in the medical profession. Its timely treatment is very important for the better outcome of the scar treatment and for the improvement of the life quality of the patients. The aim of this study was retrospectively analyzed the epidemiological characteristics affecting the efficacy of the scar surgical treatment of the people in the western part of China. METHODS Total 414 scar cases were retrospectively analyzed to clarify the epidemiological characteristics and the factors affecting the scar surgical treatment efficacy. The factors included were sex, age, area distribution, treatment seasons, injury sites, injury causes, and the time from scarring to the surgical treatment. All scar cases were surgically treated with the repairing technology including skin graft, flap and soft tissue dilation. RESULTS There were 206 males and 208 females with the average age 20.53±12.9 years (age range 1-68 years). The patient proportions in the age groups of 0-20, 21-40 and >40 years were 61.4% (254 cases), 29.2% (121 cases), and 9.4% (39 cases) respectively. The patient's attendance rate reached the highest during the summer and winter. Most patients were from the rural areas with an increasing tendency each year. The burn scars were the most abundant and the injury sites were mostly the head and face. Univariate analysis showed that the time from scarring to the surgical treatment and the injury sites were significantly influenced the scar surgical treatment efficacy. Logistic regression analysis demonstrated that the injured sites of the head and face significantly influenced the scar surgical treatment efficacy. CONCLUSION With the development of economy in China, more scar patients especially younger and children visit doctors predominantely from the rural areas. Usually, they get their scars in the exposed area of their bodies (head and face) which seriously affect the patient's appearance and function. Factors influencing the scar surgical treatment efficacy has important clinical significance of prevention and treatment.
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Affiliation(s)
- Z Yang
- Department of Plastic and Cosmetic Surgery Xinqiao Hospital, Third Military Medical University, Republic of China -
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Peng KW, Lei Z, Xiao TH, Jia FG, Zhong WX, Gao Y, Shen BX, Xie JW. First trimester caesarean scar ectopic pregnancy evaluation using MRI. Clin Radiol 2014; 69:123-9. [DOI: 10.1016/j.crad.2013.07.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 05/21/2013] [Accepted: 07/24/2013] [Indexed: 10/25/2022]
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49
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Wen Z, Lei Z, Jin-An M, Xue-Zhen L, Xing-Nan Z, Xiu-Wen D. The inhibitory role of miR-214 in cervical cancer cells through directly targeting mitochondrial transcription factor A (TFAM). EUR J GYNAECOL ONCOL 2014; 35:676-682. [PMID: 25556274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Mitochondrial transcription factor A (TFAM) is a high-mobility group (HMG) protein and acts as a key regulator in mitochondrial DNA (mtDNA) replication, transcription, and inheritance. Accumulating evidence has demonstrated that TFAM plays an important role in tumorigenesis; however, the regulatory mechanism of TFAM in cervical cancer has not been revealed. In the current study, the au- thors found that with malignancy of cervical cancer, the protein expression of TFAM was gradually increased, while the expression of miRNA-214 was gradually downregulated. They further identified that TFAM is a target of miR-214. Forced overexpression of miRNA-214 significantly suppressed cell proliferation, cell cycle progression, colony-formation, and migration of cervical cancer Hela and Caski cells; however, upregulation of TFAM notably promoted cell proliferation, cell cycle progression, colony-formation, and migration of Hela and Caski cells. The authors further showed that miR-214 enhanced the susceptibility of Hela and Caski cells to the chemotherapy drug cisplatin. In conclusion, the current study provides a new sight for the regulatory pattern of miRNA-214 and TFAM in cervical cancer in vitro, indicating that miRNA-214 and MTFA may become important candidates for developing promising therapeutic strategies for the treatment of cervical cancer.
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Affiliation(s)
- Z Wen
- Department ofOncology, The Second Hospital of Central South University, Changsha, China
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50
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Wang HB, Li YX, Hao YJ, Wang TF, Lei Z, Wu Y, Zhao QP, Ang H, Ma L, Liu J, Zhao CJ, Jiang YX, Wang YR, Dai XY, Zhang WN, Sun T, Yu JQ. Neuroprotective effects of LBP on brain ischemic reperfusion neurodegeneration. Eur Rev Med Pharmacol Sci 2013; 17:2760-2765. [PMID: 24174357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM The present study was conducted to investigate whether LBP had a protective effect on cerebral ischemic reperfusion injury and to determine the possible mechanisms. MATERIALS AND METHODS Male Kunming (KM) mice were used to make the model cerebral artery occlusion/reperfusion (MCAO/R). The behavioral test was used to measure neurological deficit scores for evaluation of ischemic reperfusion damage of brain. The change of electroencephalograph (EEG) was monitored by Model SMUP-E Bio-electric Signals Processing System. The infarction area of brain was assessed in brain slices with 2% solution of 2,3,5-triphenyl tetrazolium chloride (TTC). Spectrophotometric assay was used to determine the activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT) and lactate dehydrogenase (LDH), contents of malondialdehyde (MDA) and adenosine triphosphate (ATP) of the brain. RESULTS The results showed that LBP at doses of 20 and 40 mg/kg markedly decreased the neurological deficit scores and the infarction area in MCAO/R mice. At the same time, LBP significantly decreased MDA content, and increased SOD, GSH-Px, CAT, LDH activities in ischemic reperfusion brain. CONCLUSIONS These suggest that LBP might act as a potential neuroprotective agent against the cerebral reperfusion-induced injury in the brain through reducing lipid peroxides, scavenging free radicals, and improving the energy metabolism.
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Affiliation(s)
- H-B Wang
- Department of Pharmacology, Ningxia Medical University, Yinchuan, China.
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